Table 1.
Cohort demographics after matching.
| Mild burns without PTSD | Mild burns with PTSD | Moderate burns without PTSD | Moderate burns with PTSD | Severe burns without PTSD | Severe burns with PTSD | Critical burns without PTSD | Critical burns with PTSD | |
|---|---|---|---|---|---|---|---|---|
| Number of patients before match | 306,068 | 16,004 | 8719 | 829 | 2806 | 392 | 2878 | 349 |
| Number of patients after match | 15,966 | 15,966 | 810 | 810 | 378 | 378 | 333 | 333 |
| Incidence of PTSD | 4.96% | 8.68% | 12.26% | 10.81% | ||||
| Mean age in years (SD) | 40.1 ± 16.4 | 39.2 ± 15.8 | 40.3 ± 18.5 | 39 ± 17.4 | 38.7 ± 19.3 | 39.3 ± 16.4 | 36.4 ± 20 | 39.7 ± 14.5 |
| Male | 38.8% | 38.3% | 54.3% | 53.7% | 58.9% | 59.8% | 60.1% | 57.1% |
| Female | 61.2% | 61.6% | 45.6% | 46.2% | 41.1% | 40.2% | 39.9% | 42.9% |
| White | 23.4% | 22.7% | 21.7% | 18.6% | 24.6% | 22.8% | 22.2% | 23.1% |
| Black | 3.9% | 4.1% | 2.6% | 3.5% | 5.6% | 6.1% | 4.5% | 3.3% |
| Asian | 0.1% | 0.1% | 0.0% | 0.0% | 0.0% | 0.0% | 3.0% | 3.0% |
| Other Races | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| Unknown Races | 72.6% | 73.1% | 75.7% | 77.9% | 69.8% | 71.1% | 70.3% | 70.6% |
| Not Hispanic or Latino | 27.7% | 27.0% | 24.3% | 22.8% | 29.1% | 28.0% | 23.4% | 25.2% |
| Hispanic or Latino | 1.8% | 2.1% | 1.2% | 1.7% | 2.6% | 2.6% | 3.0% | 3.0% |
| Unknown Ethnicity | 70.5% | 70.9% | 74.5% | 75.5% | 68.3% | 69.4% | 73.6 | 71.8 |
Note: A is the Control group (without PTSD) and B is the Case Group (with PTSD).
PTSD: Post-Traumatic Stress Disorder; SD: standard deviation.